I'm not sure how you arrived in this forum with your question, but you may find it better to hop over to the Virus & security alerts forum and ask there.
This forum isn't visited too much by mainstream forum members, only when a Help & howto newsletter is published. In the V&A forum there are many more people with knowledge of these things
When you get there, try and give as much information as you can, eg your system specifications, like which Operating System, what speed processor, and how much RAM, and also, please state which virus protection program you have got, and what their web site is.
We know that some anti-malware programs are not all they are supposed to be, and sometimes will give what is called a ''false positive'', eg they say there is a virus or spyware, but there is not.
However, I am not saying that's the case with your anti-virus program at this stage.
I recently downloaded a virus protection program with a 30 day free trial offer. It?s an excellent program, The problem I?m having with it, is, it keeps finding this error or virus t?skmgr.exe. When I?m prompt to delete it, I hit yes only to find out that it keeps coming back every time I restart my computer or when it?s being rescanned as I?m on line. I did some research on the executable file and the only thing I could fine were related to the Trojan horse virus under taskmgr.. I was wondering if any one can explain to me what this is and how it relates to my computer, if this is a virus can someone inform me on the best way to get rid of it. In addition, when I am on line some one keeps sending me a sound wave. I immediately shut down my computer when I hear it. I believe that the sound wave I keep receiving when I?m on line, is related to this file. Please help me to get the real Taskmgr. to stand up.